Linux Foundation Exam LFCS Topic 1 Question 57 Discussion

Actual exam question for Linux Foundation's LFCS exam

Question #: 57
Topic #: 1

[All LFCS Questions]

Which of the following commands overwrites the bootloader located on /dev/sda without overwriting the partition table or any data following it?

Add if=/dev/zero of=/dev/sda bs=512

Bdd if=/dev/zero of=/dev/sda bs=512 count=1

Cdd if=/dev/zero of=/dev/sda bs=440 count=1

Ddd if=/dev/zero of=/dev/sda bs=440

Show Suggested Answer

Suggested Answer: C

by Cyril at Apr 19, 2023, 03:26 PM

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Jeff

4 days ago

Wait, are we trying to fix the bootloader or just play a prank on the computer? Cause I know a few 'creative' options that might be more fun...

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Dyan

8 days ago

Option A looks like it'll do the trick. Gotta love the good ol' zero-fill method. Simple and effective!

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Virgilio

9 days ago

Hmm, I'm leaning towards Option D. Why go for a specific count when you can just wipe the whole bootloader, right? Get the job done in one fell swoop!

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Virgie

12 days ago

I'm gonna go with Option B. Better safe than sorry, right? No need to risk the whole partition.

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Willow

17 days ago

But wouldn't overwriting just 440 bytes be risky? I think it's safer to overwrite just the first 512 bytes with count=1.

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Sheldon

21 days ago

Option C is the correct answer. It overwrites only the bootloader without touching the partition table or data.

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Aleisha

26 days ago

I disagree, I believe the correct answer is C) dd if=/dev/zero of=/dev/sda bs=440 count=1.

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Willow

27 days ago

I think the answer is B) dd if=/dev/zero of=/dev/sda bs=512 count=1.

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